BRITISH ANNELIDS.
189
on the 31st segment, and the clitellar papillae (tubercula pubertatis)
are on segments 28, 29, 30. The under side of segment 16 is tumid,
so that it may easily be mistaken for the 15th, which carries the
male pores. Other segments are also frequently marked by similar
tumidities.
Forma arborea, Rosa, seems scarcely a distinct species, although
it has been so ranked. It has papillae on two girdle segments (29,
30), and is smaller than the type. In every other respect they seem
to be identical. I have specimens of this form from Epping Forest.
Forma constricta, Rosa, has also been reckoned a distinct species ;
but I have examined a series collected in Sussex by the side of a
set kindly presented to me by Dr. Rosa himself, and I fail to see
any real difference, except in the constriction of the segments.
Var. pallescens, Friend, is the true "Gilt-tail" of the angler, and
sometimes attains a considerable size. It is very much lighter than
any of the other species and varieties, and exceedingly delicate-looking.
It emits a large quantity of yellow fluid when irritated, and is a most
useful worm for bait. I have received a very fine set from Mr. Allen,
collected under old rags where manure is deposited at West Ham.
I have also had either the type or one of the forms from Woolwich,
Chingford (arborea), through the kindness of Mr. W. Allen; and
from Bushwood and other parts of Epping Forest, through Mr. George
Day, F.R.M.S.
I append a tabular view, marking with an asterisk those which
are at present on record for Essex. I am sorry that I cannot con-
gratulate my readers on their enthusiasm, or the efforts they put
forth to make the worm-fauna of this county better known. If
they had a tithe of the zeal of my Irish correspondents—who have
added several new species to our lists, we should be able, probably,
to fill up nearly all the blanks which still remain in our catalogue.
I have received a very interesting aquatic worm (Dichaeta cur-
visetosa, Friend) from Chelmsford, which I hope shortly to figure
and describe in The Essex Naturalist. Meanwhile, I once more
appeal for living specimens, sent in tin boxes filled with moss, and
addressed 4, The Grove, Idle, Bradford.
[The table of the Dendrobaena group of Allolobophora is given
on the next page.]